The solar business is entering a new era where project success is no longer just about equipment choices and installation know-how. As compliance standards, domestic content restrictions, and incentive criteria become more intertwined, installers must navigate more variables that can affect everything from procurement choices to project economics.
Tax incentives remain an important economic engine, but compliance is no longer purely a financial or regulatory issue. It has become a key driver for supply chain planning, inventory management, and overall company strategy. Installers who proactively adapt to these changing demands will be better placed to mitigate risk, keep projects on track, and benefit from future opportunities.
As the solar industry becomes more complex, understanding how these regulations affect sourcing, eligibility, and project execution is becoming critical to long-term success.
Understanding perks and new regulations
The One Big Beautiful Bill Act (OBBBA) imposed foreign entities of concern (FEOC) compliance criteria for eligibility for the underlying 30% base tax credit for systems with maximum net output under 1 MWAC. The OBBBA also eliminated the home tax benefit for cash and loan purchases. The equipment must be FEOC-compliant to qualify for any tax benefit. The 10% domestic content bonus adder is available only if domestic content standards are met. The domestic content % demands that a particular amount of components – panels, inverters, and racking – be manufactured in the U.S.
FEOC compliance verification is necessary. Manufacturers are increasingly getting third-party banned foreign entity (PFE) letters to confirm compliance with relevant sourcing and production rules. Adding to the difficulty, the permissible proportion of material from banned nations drops every year, making compliance harder.
Many of the most common solar panels and system components are not domestic-content compliant; as a result, installers are stuck choosing between product availability and incentive eligibility. This increases pressure on project planning, as installers must weigh stranded inventory, limited sourcing options, and tough choices between cost, compliance, and schedules.
You need to change the way you work in this setting. It’s no longer simply about securing panels—it’s about understanding how every component in a system contributes to compliance, and how the right supply chain and industry alliances can help bridge the gap.
Overcoming Sourcing Challenges: Strategies
With so few manufacturers qualifying, two markets are slowly developing: one for compliance equipment that qualifies for the tax credit and another for cheaper equipment that doesn’t qualify or is non-compliant.
While difficult, several producers can often meet both domestic content and FEOC standards. Working with them may also give installers peace of mind and prevent situations where inventory is later found to be non-compliant.
These scenarios can create major issues for installers. Material value is declining, so prices must be adjusted to stay competitive. Non-compliant material may still be sold, but without the tax credits. If a third-party owner (TPO) or installer uses non-compliant equipment, the IRS may come back years later to recoup tax credits; therefore, due diligence and authorized vendor lists are vital to mitigate risk.
Another way to prevent these problems is to build strong relationships with distributors that can source compliant products and guarantee manufacturer compliance.
Regulatory Implications on Industry and What’s Next
Residential solar is off from 2024, but the worst hit are small- and medium-sized installations that depend on cash and financing arrangements. Alongside this decline in the residential solar sector, TPO projects with large installers have increased. These projects are funded under a paradigm where a third entity controls the solar system and generally receives the appropriate tax benefits. TPO projects are somewhat insulated from the downturn; however, local variation may exist. In certain places, there are no TPO choices, either because solar penetration is minimal or utilities’ prices are such that cash and loan transactions are the only feasible route. In these circumstances, market tactics must adapt to local realities.
The new regulatory climate has been tough for small installers, but it has also created new financial solutions, such as prepaid power purchase agreements (PPAs), that may make projects more affordable. With PPAs, a third-party owner claims the Section 48E clean electricity investment tax credit, which IRS law allows for investments in eligible clean electricity facilities and energy storage technologies. This tax credit could be worth 30% or more of the investment’s value.
Batteries remain eligible for tax credits until 2030, as the tax incentives for solar installations wind down. Even if the solar credits run out sooner, batteries make up a big part of the project’s cost.
What do installers need to do now?
Installers will need to get ahead of the curve on risk management, as compliance requirements become more closely tied to project economics and equipment sourcing decisions.
Compliance has to be included in project planning from the beginning, not added later at procurement. Knowing the eligibility criteria early may assist save expensive redesigns, delays, or equipment replacements later in the project life cycle.
It is not just a question of pricing and equipment availability. Installers should consider incentive eligibility, sourcing restrictions, and potential regulatory changes when assessing items and suppliers.
Proper record-keeping and backup paperwork will support project assessment and eligibility for appropriate incentives and credits. Getting the documentation procedures right early on may save you many administrative headaches down the road.
With the speed of regulatory and legislative change, installers should consult certified legal and tax advisors to understand how changing requirements may affect project eligibility and financial outcomes.
Because of the policy changes at the federal and state level, and the impact of tariffs, future-proofing solar investments has become a very complex matter. The best defense is to be aware and engaged in policy debates. For organizations that can adapt, a clear path remains, but it requires deeper understanding and stronger collaboration with manufacturers, distributors, and major industry groups.
